Hydrochloric Acid → 6-((S)-1-(tert-butoxy)-2-ethoxy-2-oxoethyl)-7-(8-fluoro-5-methylchroman-6-yl)-5-methylpyrazolo[1,5-a]pyrimidine-2-carboxylic acid

HRID 1630310노트

반응식

HRID 1630310 반응식
[C:1]([O:5][C@@H:6]([C:12]1[C:13]([CH3:38])=[N:14][C:15]2[N:16]([N:30]=[C:31]([C:33]([O:35]CC)=[O:34])[CH:32]=2)[C:17]=1[C:18]1[C:19]([CH3:29])=[C:20]2[C:25](=[C:26]([F:28])[CH:27]=1)[O:24][CH2:23][CH2:22][CH2:21]2)[C:7]([O:9][CH2:10][CH3:11])=[O:8])([CH3:4])([CH3:3])[CH3:2].[OH-].[Na+].O.Cl>C1COCC1>[C:1]([O:5][C@@H:6]([C:12]1[C:13]([CH3:38])=[N:14][C:15]2[N:16]([N:30]=[C:31]([C:33]([OH:35])=[O:34])[CH:32]=2)[C:17]=1[C:18]1[C:19]([CH3:29])=[C:20]2[C:25](=[C:26]([F:28])[CH:27]=1)[O:24][CH2:23][CH2:22][CH2:21]2)[C:7]([O:9][CH2:10][CH3:11])=[O:8])([CH3:4])([CH3:2])[CH3:3]

참가 물질

6

반응물 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 14798Sodium Hydroxide2회HCID 71258382HCID 71258382, 화합물

생성물 1

HCID 712583786-((S)-1-(tert-butoxy)-2-ethoxy-2-oxoethyl)-7-(8-fluoro-5-methylchroman-6-yl)-5-methylpyrazolo[1,5-a]pyrimidine-2-carboxylic acid수율 89.1%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of ethyl 6-((S)-1-(tert-butoxy)-2-ethoxy-2-oxoethyl)-7-(8-fluoro-5-methylchroman-6-yl)-5-methylpyrazolo[1,5-a]pyrimidine-2-carboxylate (4 g, 6.07 mmol) in THF (40 mL) was added 1N NaOH (6.07 mL, 6.07 mmol) and the resulting mixture was stirred at rt for 16 h. At this point LCMS indicated about 70% conversion, so additional NaOH (2.5 mL, 2.5 mmol) was added and the mixture was stirred for another 2 h. At this point LCMS indicated progression of reaction (approx 90% coversion) along with small amount of di-acid. Water (20 mL) was then added and the mixture was acidified with 1N HCl (10 mL) and extracted with ether (2×100 mL), washed with brine (50 mL), dried (Na2SO4), filtered and concentrated to afford 6-((S)-1-(tert-butoxy)-2-ethoxy-2-oxoethyl)-7-(8-fluoro-5-methylchroman-6-yl)-5-methylpyrazolo[1,5-a]pyrimidine-2-carboxylic acid (2.7 g, 5.41 mmol, 89% yield) as off-white solid. 1H NMR (500 MHz, CDCl3) δ: 7.21 (s, 1H), 6.85 (d, J=10.7 Hz, 1H), 5.00 (s, 1H), 4.36 (t, J=4.4 Hz, 2H), 4.19-4.12 (m, 2H), 2.81 (s, 3H), 2.80-2.74 (m, 2H), 2.20 (dd, J=6.3, 4.1 Hz, 2H), 1.83 (s, 3H), 1.24-1.20 (m, 3H), 1.18 (s, 9H). LCMS (M+H)=500.4.

후처리

  1. additionwas added
  2. stirringthe mixture was stirred for another 2 h
  3. extractionextracted with ether (2×100 mL)
  4. washwashed with brine (50 mL)
  5. dry with materialdried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated

출처 및 근거

ORD 기록
ord-023685ff4b9c4b39a938c8bb8535af1d
출처 데이터셋
uspto-grants-2014_07
특허 번호
US08791108B2

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